baber/WOPTO huggingface dataset:
Patent GB-513645-A (GB)
Title: Improvements in or relating to control systems for electric motors
IPC: H02P7/03
Filed: 1938-03-17
Abstract: 513,645. Field control of D.C. motors; screw propellers. BOSCH GES., R. March 17, 1938, No. 8216. Convention date, March 17, 1937. [Class 38 (iii)] [Also in Group XXXIII] Travelling between predetermined limits. - A motor controlled to run in either direction and serving to adjust the blades of propellers of aircraft, has a series field winding and a shunt field winding, and the last is de-energized when the motor is adjusting the blades outside a predetermined normal range of movement. Upon operation of a switch b to the right a coil i<@1> of an electromagnetic change-over switch d is operated to connect the motor a to a battery g to operate in one direction. At a predetermined point in the movement of the blades, a switch o is operated to energize a relay n which opens its contacts m to de-energize the shunt field winding c. The motor continues to operate with its series field energized until a limit switch k<1> is opened to deenergize the coil i' and open the motor circuit. The motor is operated in the opposite direction when the switch h is moved to the left to energize a coil i<2> of the switch d and reverse the motor armature connections, the switch o reopening when the blades return to the normal range of movement to re-energize the shunt field, and the limit switch k<2> stopping the motor at its limit of movement in the reverse direction. The point at which the switch o operates may be one at which the highest efficiency of the propeller is attained. The motor is mounted on the propeller and the connections reduce the number of slip rings p', p<2>, p", between the battery and the motor.
Patent GB-699442-A (GB)
Title: An improved tractor-drawn sweeping machine
IPC: E01H1/05
Filed: 1952-04-01
Abstract: 699,442. Sweeping machines. McKINNON, D. J. B. May 21,1952 [April 1, 1952], No. 8243/52. Class 107 A sweeping machine for attachment to a. tractor having a three-point lift linkage system and a rear power take-off shaft, comprises an elongated brush unit extending rearwardly from a turntable rotatable about a vertical axis on a support adapted to fasten to the lift linkage of the tractor. The brush unit is driven by a universal shaft from the power takeoff shaft and the turntable is lockable with the brush at right angles to the tractor track or at a position inclined thereto in either direction. Brush 5 in cover 25 is carried by a frame 4 which pivots around the vertical axis of the universal joint pivot pin 16. The tractor linkage bars 10. 12 are secured as shown to the frame, and the telescopic drive shaft 20 and universal joints 21, 27 allow the take-off shaft 22 to remain connected whilst the apparatus is raised or lowered by the lifting gear of the tractor. Wheels 26 may be provided to support the brush unit. the links carrying holes 23 which allow the brush unit to be locked, via holes 24, in the inclined position.
Patent GB-739150-A (GB)
Title: Improvements in or relating to heat exchangers
IPC: F28F13/06
Filed: 1951-11-28
Abstract: 739,150. Tubular heat-exchangers. HUET, A. Nov. 28, 1951, No. 8292/55. Divided out of 739,050. Class 64 (3). Relates to heat-exchangers comprising parallel tubes a each provided with two diametrically opposed fins b, c, the tubes being disposed in rows with the tubes of one row staggered in relation to the tubes of an adjacent row and the external fluid flowing transversely over the tubes. According to the invention, the tubes in alternate rows are so asymmetrically disposed with respect to the tubes in the remaining rows as to provide between the rows of tubes sinuous passages A for the external fluid having narrower portions c-d alternating with wider portions to produce variations in the speed of flow and in the pressure of the external fluid as it flows through the passages A. In the form shown, the arrangement is such that the distance x between planes XX-YY extending at right angles to the tube rows is less than the distance y between the planes YY-ZZ. Specifications 729,113 and 739,050 are referred to.
Patent GB-432062-A (GB)
Title: Paper or like fibrous containers for oil and the like
IPC: B65D3/22
Filed: 1934-03-16
Abstract: 432,062. Oil &c. cartons. JOHN, R., Hotel Roosevelt, 45th Street, New York, U.S.A. March 16, 1934, No. 8364. [Class 66] A carton or container for oil &c., comprises a laminated tubular body portion of fibrous material such as paper, the inner layer 171 of which is substantially impervious to oil, preferably consisting of parchmentized paper, and metal ends irremovably secured thereto. The body portion comprises three spirally wound layers attached together by glue or paste, the intermediate layer 18 being of wood pulp paper and the outer layer 19 of glazed waterproof paper. Before the metal ends are spun on, the ends of the tubular body part are dipped in a cellulose acetate solution of thick consistency. The metal bottom 2 and top 3 are preferably of tinned iron. The bottom has a filling aperture closed by a plug expanded into place, and the top has a discharge aperture 7 from which cuts 8 extend defining a tongue 10 which can be bent downwardly to enlarge the aperture for pouring. Beneath the aperture and the tongue is secured a strip or window 11 of nitro-cellulose film on which a gauge mark is made so that the volume of the contents can be observed without opening the container. A paper &c. spout 14 bearing printed matter and serving as a label is formed with tab portions 15 slidably encircling the container. The spout can be moved into extended pouring position as shown after breaking a seal 17.
Patent GB-727090-A (GB)
Title: Automatic headlight dimmers
IPC: B60Q1/14
Filed: 1953-03-26
Abstract: 727,090. Automatic headlight dimmers. RABINOW, J. March 26, 1953 [May 1, 1952], No. 8396/53. Class 40 (3). An automatic headlight dimmer comprises a light aperture 3 behind the windscreen of the car, light from objects seen through the windscreen being reflected by a mirror 4 and focused to provide an image at 9. Successive apertures 7a spaced at different distances from the centre of a motor-driven disc 7 pass the light to a photo-cell 12, the output of which is amplified at A and passed through a rectifier 16 and peak detector 17 to the grid of a tube 18 which energizes relay 19 when a sufficiently bright light is detected. The relay 19 dims the headlamps automatically. To avoid hunting the relay 19 when energized makes the tube 18 sensitive to a smaller current. The automatic return to full headlamps may be over-ridden by a manually-controlled switch 22. The apparatus by scanning small areas of the field of vision through small apertures is particularly sensitive to relative brightness. A modification (Fig. 3, not shown) dims only when an oncoming car is close enough for its headlights to be discerned as separate sources of light.
Patent GB-249678-A (GB)
Title: Improvements in struts, props or jacks for use in trenches, mines and other places
IPC: E21D15/24
Filed: 1925-03-30
Abstract: 249,678. Woodham, H. G. March 30, 1925. Jacks. -An adjustable mine-prop or jack of the kind having a screw and nut and a protecting sleeve is provided with packing between the inner and outer sleeves, the inner sleeve carrying an adjustable head and the screw a base-plate. The base-plate a is ribbed and has studs a<5> and apertures a<3> for securing spikes and is secured to the lower end of the screw b. The screw carries a nut f with a sleeve extension f<1> perforated for a tommy-bar g and having a ball-joint connection f<3> with the head h. The protecting sleeve d is secured at its lower end d<1> to the screw and is provided at its upper end with a recess d<2> for packing e. A ball-jointed base m, Fig. 3, may be used and extension tubes k may be fitted between the base and the screw. The parts may be reversed so that the nut is at the top of the screw and the packing at the bottom of the sleeve. In a duplex form a right and left-handed screw is centrally perforated for the tommy-bar and carries outer sleeve extensions with packing at the ends.
Patent GB-273021-A (GB)
Title: Improvements in electric gas discharge rectifiers
IPC: H01J17/00
Filed: 1926-03-29
Abstract: 273,021. M.-O. Valve Co., Ltd., Bartlett, A. C., and Ryde, J. W. March 29, 1926. Vacuum tubes. - In a gas discharge rectifier having more than one set of electrodes the discharge between similar electrodes, for instance the anodes, is used for priming the discharge between the electrodes of the separate sets. In the biphase rectifier shown in Figs. 1 and 2, two iron anodes 3, 4, surrounded by a common cylindrical cathode 1 of nickel, are mounted at equal distances from a partition 13. The cathode is preferably open at the top, but may be closed by a lid 16 which is separated from the partition by a space 17 through which the priming discharge between the anodes passes. The lower and of the partition extends to a disc 15 closing the lower end of the cathode. Each anode is mounted on a pinch by a nickel stem 5, Fig. 4, surrounded by a silica tube 7, the lower part of which is surrounded by a glass tube 8 supporting a steatite insulator 9 shaped so as to leave an annular space around the tube 7. The disc rests on annular shoulders 11 on the insulator 9. The cathode may be coated with electropositive, substances such as alkali or alkaline earth metals. The filling may be helium at a pressure of 15mm. of mercurv. In a modification two anodes are mounted in the axes of two open-ended cylindrical cathodes carried by a common support.
Patent GB-1421988-A (GB)
Title: Toroidal deflection yoke having conductors wound in flyback manner
IPC: H01J9/236
Filed: 1973-02-21
Abstract: 1421988 Deflection coils for cathode-ray tubes RCA CORPORATION 21 Feb 1973 [28 Feb 1972] 8453/73 Heading H1D A toroidal deflection yoke, e.g. for a colour cathode-ray tube comprises a pair of horizontal and a pair of vertical deflection coils wound on a hollow flared core, the turns being applied so that they occupy a single layer at the wider end of the core and a double layer at the narrow end, the coils being wound by taking a conductor around the core with the turns close together at the narrow end and spaced apart at the wider end, this being done for several turns and then the conductor is taken back in a fly-back manner on the outside of the core and further turns are applied to fill in the spaces between the conductors at the wide end and on top of the earlier turns at the narrow end. A typical winding pattern is shown in Fig. 3. The turns of coil 1 are indicated by lines between the numbered circles and those of coil 2 by lines between numbered triangles. Solid lines are portions of turns on the outside of the core and a few internal portions are shown as dotted lines, it being understood that all circles or triangles of like number are connected by such internal turn portions. In this Figure, the flyback turn is made after alternate turns but in Fig. 4 (not shown) seven turns are made before the fly-back. After turn 15, Fig. 3, a gap is left in coil 1 to accommodate coil 2 to obtain the required turn distribution, coil 2 being wound in a pattern similar to coil 1, i.e. with fly-back turns after alternate turns. This method of winding deflection yokes is said to require less operations in the winding machine than the conventional method of winding continuously around the core and cutting the wire to form the separate coils.
Patent GB-388586-A (GB)
Title: Process for coating metal bodies with the azides of emissive metals and for the manufacture of metallic or metallic oxide cathodes
IPC: H01J9/04
Filed: 1932-03-22
Abstract: A metal such as molybdenum, tungsten, or nickel is treated with a solution of an azide of an emissive metal the temperature of which is above 50 DEG  C. and then dried.  The coated metal may then be heated to decompose the azide to get a metallic coating, for example in the preparation of a cold or incandescent cathode having a metallic or metallic oxide emissive layer.  The azide solution is preferably saturated and at boiling-point and the base metal is preferably preheated to a temperature above the boiling-point of the solution and may be immersed in or sprayed or painted with the hot solution. The base metal is preferably formed with perforations or interruptions close together, e.g. as a net or a close spiral, so that when treated with the solution a continuous film of liquid is produced owing to capillary action. The preparation of a cathode coated with metallic barium is described.
Patent GB-512909-A (GB)
Title: Improved means for driving pumps from motor road vehicles
IPC: B60K25/08
Filed: 1938-03-19
Abstract: 512,909. Driving pumps on motor vehicles. PALMER, R. G. March 19, 1938, No. 8507. [Class 79 (ii)] A centrifugal pump 4 on the vehicle is driven through a universal joint 7 by a shaft, 8 having a pulley 9 adapted to be placed in contact with a vehicle wheel 10 so as to be driven therefrom, the shaft having a self-aligning bearing 11 employed to hold the pulley against the wheel tyre when desired. The bearing 11 may be secured in a strap 12 by a pin 13, the strap being adjusted in a fixed bracket 16 by the screw gear 15, 17 so as to cause the pulley to bear with any desired pressure against the wheel. When the device is not in use the bearing 11 is released from the strap 12 and the shaft and pulley are held in the inclined position shown in dotted lines. The pump may be used to either fill or empty a tank on the vehicle and may be used for fire fighting or other purposes.
Patent GB-1445552-A (GB)
Title: Camless programme-controlled automatoc multispindle machine tool
IPC: B23B9/10
Filed: 1975-02-28
Abstract: 1445552 Multi spindle lathes GILDEMEISTER AG 28 Feb 1975 [1 March 1974] 8532/75 Heading B3T In a cam-less multi-spindle lathe in which a plurality of work spindles are located in a headstock or rotary indexable turret head, two adjacent machining stations are provided with which are respectively associated a displaceable tool carrying assembly, the assemblies being mounted on a common guideway and are displaceable between their respective associated machining station and the other machining station. In the embodiments described the cutting tools are mounted in turrets 12, 13 on respective tool carrying assemblies which are constituted by independently driven screwactuated cross-slides 8, 9 with tool slides 10, 11 thereon, respectively, the cross-slides being mounted on a common guideway 7 on a bed 6. The bed may be separately secured to the frame 1 carrying an indexable spindle drum 2 or a multi-spindle headstock 20.
Patent GB-589951-A (GB)
Title: Improvements in and relating to pumps
IPC: F16N13/02
Filed: 1945-04-06
Abstract: 589,951. Reciprocating pumps for liquids. PIPER, F., PIPER, J. R., and PIPER G. (trading as PIPER & SONS, F.). April 6, 1945, No. 8536. [Class 102 (i)] A pump for supplying lubricant and cutting liquid to the cutters of machine tools comprises a cylinder 10 submerged in a sump of the liquid provided with an outlet 15 from which the liquid may be delivered to the desired point, and :a hollow plunger 16 which is a close fit in the cylinder 10 to prevent the passage of liquid past it and has a non-return valve structure 17 to permit passage of liquid past the plunger on the up stroke and prevent such passage on the down stroke. The non-return valve consists of a disc 17 on the lower end of the plunger 16 and of sufficient diameter to close it, the disc being supported by a projection 18 thereon engaging a cross member 19 in the plunger. The disc is movable so that it will close the plunger on the down stroke and open it on the up stroke, to an extent adjustable by a set screw 20 bearing on the cross member 19.
Patent GB-276391-A (GB)
Title: Improvements in or relating to biscuit cutting and embossing machines
IPC: A21C11/10
Filed: 1926-03-29
Abstract: 276,391. Green, T. L. March 29, 1926. Cutting-Machines.-An interchangeable cutter unit for biscuit machines adapted to be connected to and reciprocated by a crosshead comprises a cutter head, an embosser head and a stripper plate, together with means permitting relative movement of the cutter head and stripper plate, means tending to move the embosser head upwardly relatively to the cutter head and stripper plate, and means for limiting the upward movement. The cutter head is secured to a cutter cross-head operated by crank mechanism, the embossers being operated indirectly through presser feet carried by a second crosshead, the arrangement being such that the embossers engage the dough in advance of the cutters and are cleared by the cutters which, on return, are cleared by the embossers. Cutters 1, Fig. 1, are secured to a cutter head 10 from which is suspended by spring-encircled bolts 21 the stripper plate 20. Embossers 2 are secured to a head 30 guided within flanges of the head 10 and supported upon springs 36 encircling bolts 35 secured to the stripper. The unit is secured by bolts 15 to a cutter crosshead 16 reciprocated on guides 17 through rods 18. A second cross-head 44, reciprocated along the guides 17 through rods 45, carries presser feet 41 upon rods 42 which pass through the head 16 and are adjustable by screw- and-nut mechanism 46, 47, 48. The feet 41 are adapted to engage flanged portions of the head 30. A comparatively long stroke is imparted to the heads 16, 44 to ensure a quick embossing and cutting action. To co-operate with a continuouslymoving dough sheet, the cutter mechanism is supported by frames 84, Fig. 12, pivoting about a shaft 16a operating the cutters &c. the frames being rocked through links 97, 92 and levers 94, 95 by a crank 89 on a shaft 87 driven from the shaft 16<a> through gears 85, 86, the shaft 87 being also carried by an arm 90 which is oscillated through lever mechanism 100-104 by an eccentric 99 on the shaft 16a.
Patent GB-826653-A (GB)
Title: Resinous compositions
IPC: H01G4/22
Filed: 1955-11-23
Abstract: A composition comprises a blend of a condensation product of an aldehyde with an interpolymer containing an acrylamide at least some of the alkylol groups derived from the aldehyde being etherified and another resin. The condensation product and a method of production are described in Specification 826,652. Specified other resins are epoxy resins, e.g. the polyglycidyl ethers prepared by reacting epichlorohydrin with 2,2 - bis - (41-hydroxyphenyl) propane, alkyd resins, nitrocellulose, urea resins, melamine resins and epoxidized oils.  The compositions form films which are heat hardenable.
Patent GB-707710-A (GB)
Title: Improvements in the production of dyestuffs of the phthalocyanine series
IPC: C09B47/04
Filed: 1952-04-04
Abstract: Sulphur-containing phthalocyanines are obtained by heating aromatic vicinal dinitriles, cyanocarboxylic acid amides or dicarboxylic acid diamides with sulphur and finely divided metals or simple or complex metal compounds, if desired in presence of an inert diluent or solvent, at 150 DEG C-220 DEG C.  The products give blue-green shades from sodium hyposulphite or sodium sulphide vats.  In examples phthalonitrile is heated with (1) cobalt chloride and sulphur, with and without sodium chloride or sulphate, (2) ferric chloride and sulphur, (3) tetrapyridino cobalto chloride and sulphur, (4) finely divided cobalt iron or zinc, sulphur, and ammonium molybdate; (5) o-cyanobenzamide is heated with cobalt chloride, sulphur and ammonium molybdate. Other starting materials specified are phthalic acid diamide, and monochlorophthalodinitrile on the one hand, and on the other the metal halides, cyanides, thiocyanates, sulphates, carbonates, oxides, sulphides, or acetates, e.g. of iron, chromium, tin, aluminium, zinc, and cobalt, and pentammine chloro cobalt chloride.
Patent GB-558847-A (GB)
Title: Improvements in and relating to cinematograph cameras
IPC: G03B17/26
Filed: 1940-05-14
Abstract: 558,847. Kinematograph apparatus. WILLIAMSON, C. M., and WILLIAMSON, S. May 14, 1940, No. 8649. [Class 97 (i)] Two openings are provided in a camera, each closable in a light-tight manner and alternatively permitting the insertion of a film magazine to occupy a definite position in the camera. As shown in perpendicular vertical sections in Figs. 1 and 3, the camera casing 1 has openings in the top and one side each permitting the insertion of a magazine 28, shown in Fig. 1 with its sliding lid removed. A magazine container is hinged on a pin 14a and comprises a top 11, serving to close the top opening, and held in closed position by a spring catch 15 ; a magazine may be pushed into the container from the rear when the container is raised as shown in Fig. 1. The container comprises one side wall 10, a bottom 14, front 13, and an inner top wall 12 provided at its rear part with a flange 12a engaging the front part of the magazine only while the magazine is being inserted ; a flange 13a locates the magazine when it is fully inserted. The opening in the camera side extends from a removable front panel 4 which extends rearwardly sufficiently to cover the pin 14a, to a rear panel 3 enclosing a motor chamber and carrying a partition forming the back of the magazine chamber. A door 5 having a bottom hinge normally closes the opening and permits the lateral insertion of the magazine into the container ; a guide plate 16 on the partition directs the magazine forwards as it is inserted. Springs 18, 19 urge the container upwards when the catch 15 is released. The magazine comprises an opensided box closed by a sliding lid 29, Fig. 3, flanges being formed thereon by a thin plate sliding in grooves and serving to secure the lid in closed position. Walls 37, 36 in the magazine form incomplete chambers for pay out and take up film rolls respectively, and the film passes over a roller 38, round a sprocket 39, under a spring 41, and round a roller 40a to the front of a spring-pressed gate member 40, and thence under a roller 40b and a spring 42 ; the tail 43 of the spring 42 serves to press the member 40. The sprocket 39 is rotated by the film, and its spindle carries externally of the magazine, a conducting segment located in an insulating disc and bridging, once in each revolution contacts 25, 26 on the container, connected to contacts 27 located on the bottom of the container and engaging the springs 18 when the camera is in use. Electrical impulses may thus be carried to an external counter for the film exposures. Cores rotatable on spindles carry the film rolls, the core 47a for the take-up spool being carried by a square headed spindle 48 driven through springs 52 frictionally engaging a gear 53 and secured to a coned disc 51 carrying, in a recess, a pin 50 engaging a cross slot in the end of the spindle 48. The springs and coned disc yield axially as the container is moved into or out of position, to enter or leave an opening 10a in the container.
Patent GB-134165-A (GB)
Title: Improvements in the Method of Attaching Revolving Rubber Heels to Boots and Shoes.
Inventor: FREEMAN FREDERICK ERNEST
IPC: A43B21/433
Filed: 1919-04-08
Abstract: 134,165. Freeman, F. E. April 8, 1919. Protectors, securing.- A revoluble heel-pad a is recessed to receive, with a tight fit, a plate c formed with a rim c2, within which is arranged a disk d secured to the heel by three screws. The pad a and plate c are adapted to revolve together on the disk d.